Thematic Bible: Who God has sealed

After these things, I saw FOUR ANGELS standing on the four corners of the land, holding the four winds of the land, that the wind should not blow on the land, nor on the sea, nor on any tree. and I saw another angel ascending from the east, having the seal of the living God: and he cried with a loud vioce to the four angels, to whom it was given to hurt the earth and the sea, saying, "hurt not the earth, nor the sea, nor the trees, till we have sealed the servants of our God in their foreheads." read more.
And I heard the number of those who were sealed: and there were sealed an hundred forty and four thousand, of all the tribes of the children of Israel.